An input validation issue was addressed with improved input validation. This issue is fixed in iOS 14.0 and iPadOS 14.0, tvOS 14.0, watchOS 7.0, Safari 14.0, iCloud for Windows 11.4, iCloud for Windows 7.21. Processing maliciously crafted web content may lead to a cross site scripting attack.
総合評価: CVE-2020-9952 は中リスク（53.9/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 1.48%、70 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.62% | 1.48% | +0.85% |
| 2 | 2026-05-17 | 0.50% | 0.62% | +0.13% |
| 3 | 2025-12-24 | — | 0.50% | — |
EPSS の全履歴 （全 18 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 7.1 | 3.1 | HIGH |
|
2.8 | 3.7 | [email protected] |
| 5.8 | 2.0 | MEDIUM |
|
8.6 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2020-9952: 1 source package rows (webkit2gtk); 5 state rows across 5 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, edge-community); fixed 5, open 0. | https://security.alpinelinux.org/vuln/CVE-2020-9952 |
debian
|
not yet assigned | CVE-2020-9952 not yet assigned priority: Debian including 2 source packages (webkit2gtk, wpewebkit), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. | https://security-tracker.debian.org/tracker/CVE-2020-9952 |
gentoo
|
normal | CVE-2020-9952: 1 GLSA(s) (202012-10), 1 atom(s) (net-libs/webkit-gtk); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-9952 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2020-9952 |
suse
|
high | CVE-2020-9952 severity important: SUSE including 135 source package names (WebKit2GTK-4.1-lang-2.36.0-150400.2.13, WebKit2GTK-5.0-lang-2.36.0-150400.2.12, …), 426 product×package rows across 59 product lines (HPE Helion OpenStack 8, SUSE CaaS Platform 4.0, … (59 product lines)): Fixed 423, Known Not Affected 3. | https://www.suse.com/security/cve/CVE-2020-9952/ |
ubuntu
|
medium | CVE-2020-9952 medium priority: Ubuntu including 6 source packages (qtwebkit, qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 78 status rows across 13 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, trusty, upstream, xenial): DNE 41, ignored 22, not-affected 8, needs-triage 4, released 3. | https://ubuntu.com/security/CVE-2020-9952 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apple | icloud | < 7.21 | cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:* |
| apple | icloud | >= 11.0, < 11.4 | cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:* |
| apple | safari | < 14.0 | cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* |
| apple | ipados | < 14.0 | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* |
| apple | iphone_os | < 14.0 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | tvos | < 14.0 | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* |
| apple | watchos | < 7.0 | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |
| webkit | webkitgtk\+ | <= 2.30.3 | cpe:2.3:a:webkit:webkitgtk\+:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://seclists.org/fulldisclosure/2020/Nov/18 | Mailing List Third Party Advisory |
| http://seclists.org/fulldisclosure/2020/Nov/19 | Mailing List Third Party Advisory |
| http://seclists.org/fulldisclosure/2020/Nov/20 | Mailing List Third Party Advisory |
| http://seclists.org/fulldisclosure/2020/Nov/22 | Mailing List Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2020/11/23/3 | Mailing List |
| https://security.gentoo.org/glsa/202012-10 | Third Party Advisory |
| https://support.apple.com/HT211843 | Release Notes Vendor Advisory |
| https://support.apple.com/HT211844 | Release Notes Vendor Advisory |
| https://support.apple.com/HT211845 | Release Notes Vendor Advisory |
| https://support.apple.com/HT211846 | Release Notes Vendor Advisory |
| https://support.apple.com/HT211847 | Release Notes Vendor Advisory |
| https://support.apple.com/HT211850 | Vendor Advisory |